Glass-furnace.



W1. "WESTBUR'Y, GLASS FURNACE. APPLICATION FILED 1UNE'26. 19,17.r

LQQQWL Patented Feb.18,'1919.

elll'uzllcu or forehearth at f `the plane of section being indicated by the narran estarasy rauurfrrnon s EVILLIAM WESTBURY, 0F OKMULGEE, OKLAHOMA,

ASSIGNOB. T0 L. SHERMAN SKELTON,

0F OKMULGEE, OKLAHOMA. I

aaeaesi;

Application led June 26, 191'?.

To all lwhom t may concern:

`Be it known that I, WILLIAM Wns'rBUnr, a citizen of the United States, residing at Okmulgee, in the county of Okmulgee and State of Oklahoma, have invented new and useful Improvements in Glass-Furnaces, of which thefollowing is a specification.

This invention relates to improvements in glass furnaces, neces employed in connection with glass drawing apparatus of the kind having one or more drawlng stations in the form of forehearths or doghouses, such as shown, for example, in my prior `Patent No. 1187025, dated June 13, 1916, the primary object of the invention being to provide an improved mode -of constructing the top andl breast Walls of the forehearth or doghouse whereby /increased strength and durability are obtained. f

A further object of the invention is to provide a construction which facilitates the `work of constructingand repairing such walls, which secures increased protection' against disintegration by the actionof heat, and which reduces sagging, warping and other distortions to a material degree.

Astill further object of the invention is to provide simple and supporting and cooling the parts subjected to intense heat.

The invention consists in the features of construction, combination and arrangement of parts more4 fully hereinafter described and claimed, reference being had to the accompanying drawing, wherein:

Figure `1 is an enlarged frontto-rear section taken centrally through the doghouse one portion of the furnace,

ilne l-1 of Fig. Li;

` iiigQ is a perspective view of one of the blocks composing the top wall;

Fig. 3 is a horizontal section through two ofthe blocks composing the breast'wall; and

Fig. 4 is a plan view, on a reduced scale,

of the forehearth or doghouse.

Referring to the drawing, 1 designates the top or crown wall of the furnace body, 2 the forehearth or 3 the front wall ofthe forehearth reservoir. chamber of the doghouse, breast Wall connecting the top' wall 1 of the furnace doghouse,

5j thereof,

wall 6 with the body. 'The top Specification of Letters Patent.

the

and particularly to tank fur' kwarping and effective 'means for' and 7 the curved-lintel'or @Lass-rumanos.

struction as set forth in are gained. i t

It is found in practice that the walls 6 and 7 are subject'to disintegration, sagging, other distortions, owing to the intense heat, as Well as to the variations ofI temperature to which they are subjected. en either one or both of these Walls is ar recess 8 formed indisintegrated, distorted or cracked to a certain degree, it isnecessary to shut down the furnace in order to make repairs, a tedious and expensive operation. The obiect of the present invention is to provide a construe tion whereby these walls will be protected to vertically disposed blocks or tiles 10, having their meeting faces provided with tongue y and-grooved connections l1 vand 1'2, thereby adapting said blocks to` be fitted in position and removed in a `ready and convenient manner. By this construction it will be evident that the wall 7 may be readily and conveniently constructed and as readily and conveniently repaired, an'd that one or more damaged blocks may be removed and replaced whenever required without requiring the replacement of the others.

T e wall 6 is also composed of bloc'ks 13,- blocks 13 are provided Jwith curved edges 14 which cooperate.

when the blocks are assembled, to form the The blocks 13 have their upper faces cut away on their inner'sides, portions 15,' andA have their outer portions plane surfaced, as indicated at 16, to abutagainst the-lower ends of the the breast wall and connected with said sup porting elements embedded in the forehearth top wall. t

6. In a forehearth construction for glass furnaces, the combination of a furnace top wall, a forehearth top wall forming a drawing opening, a breast wall extending between said top walls, a conductor extending around the drawing opening and embedded in the forehearth top wall and having terminal portions projecting at the front of the doghouse, and ,overhead supportinfr elements connected with said conductor and coperating there h to support the said forehearth top wall and breast wall.

'c'. In a. fe-rehearth construction for glass furnaces, a ro'rehearth top lwall comprising a U-shaped sepporting member, a series of assembled bleek segments having communieating openings for the passage of said supporting member, said block segments being slidably mounted on said supporting inember and having arcuate inner edges, said arcuate edges of' the assembled block segments collectively forming a drawing opening, and the top surfaces of said block sections being cut away on concaved lines above the plane of said arcuate edges, forming a channel in the Wall above and beyond the line. of

the drawing opening, and overhead supports for the block segments entering said block segments and connected with said U-shaped supporting member.

8. A forehearth having a 'top wall provided with a drawing opening, and a conductor for the circulation of a Cooling medium embedded in said top wall and extending around the sides and rear of the drawing opening.

9. A forehearth for glass drawing fur'- naces having a top wall provided with a drawing opening, and a conductor extending .around the rear and sides of the drawing opening and embedded in said top wall, said conductor having terminal portions project ing outwardly at the front of the forehearth.

l0. A forehearth for ,drawing furnaces having a top wall provided with a drawing" opening, the upper surface of said wall being concaved to form an annular dished ortion disposed at an angle to and surroun ing the drawing opening and of greater diameter than said opening.

11. In a forehearth construction for glass furnaces, the combination of a furnace top Wall, a horizontal forehearth top Wall composed of a series of block segments, connecting means for slidably holding said sections assembled, a vertical breast wall composed. 

